Oxygen therapy

We usually think of volcanoes as just big mountains with lava spewing out of the top damaging everything in their path, but they can have a positive impact as well. How do volcanoes affect people and the environment? Volcanic lava and ash adds nutrients to plants and soil. They also provide great scenery, attracting tourists from all over the world. Volcanoes benefit the environment because after they erupt, the lava dries into rock which eventually breaks down and forms a rich soil. Plants…

another version of creating ATP, or energy for the cell. It is dependent on the the electron transport chain. Each time electrons are transferred from one molecule to another, energy is released and at the end of the chain, the electrons integrate with oxygen and hydrogen ions, making water molecules. These protons that are able to combine with the electrons are pushed into the mitochondrion membrane and they move from one amino side chain to…

Atoms are the simplest form of matter. On Earth matter can be a solid, liquid, or a gas. The atoms that create the states of matter also create elements. Currently, there are organized on a chart known as the periodic table, one such element is Germanium. In fact, Germanium has a symbol known as Ge. A symbol is a shorter way to represent the element. All elements have a symbol, atomic mass, atomic number, and a number of protons, neutrons, and electrons. Germanium’s atomic mass is 72.64, this…

The tarnishing of silver is due to a chemical reaction between silver and hydrogen sulfide, producing silver sulfide and hydrogen gas. The balanced chemical equation is 2Ag (s) + H2S (g) → Ag2S (s) + H2. This is a single replacement reaction. This reaction most commonly occurs through contact with hydrogen sulfide in the air - although direct contact with substances that contain sulfur can cause tarnishing. Silver tarnishes very quickly when it is exposed to air that contains high levels of…

location, such as Buoy 21, Day Mark 1, Pelican Island Cut, and the Coast Guard Station. The main ingredient in saltwater is water. Water is composed of two hydrogen atoms and one oxygen atom that are covalently bonded and forms a polar molecule because the electrons are shared unequally. The unequal distribution causes the oxygen atom to have a negative pole and the two hydrogen atoms have a positive pole. The polarity of water makes it unique and allows it to perform as a solvent (Duke…

Conclusion The hypothesis was, if there's more water in a specific area, then the sow bugs will go the area with more water. In the experiment, the results closely followed out hypothesis. The was an outlier of 15mL, but the sow bugs still followed the main pattern. If you look at the graph of the results, it shows increasing data, the more water on a paper towel, the more sow bugs would go on that paper towel. The standard deviation values were low, within a range of 0-2, showing that the…

For much of human history, salt has been mined from the areas around dry lake beds and in deposits left after ancient seas dried up. These bodies of water all evaporated, leaving their crystallized salt deposits behind. Mined salt is sourced from these deposits. It differs from sea salt in that sea salt is taken from living oceans. While it is usually ground finely for sprinkling onto food as table salt, some of it is kept in a coarse and chunky form that is referred to as rock salt. Rock salt…

DISCUSSION 2-Bromoheptane + Potassium TertButoxide The 2-Bromoheptane + Potassium TertButoxide reaction yielded 3 different products: 1-heptene, Cis-2-heptene and Trans-2-heptene. However, the major product constituent was 1-heptene. Because Potassium TertButoxide is a bulky base, steric hindrance prevents it from attacking a hydrogen on a highly substituted carbon. Consequently, the base attacks a hydrogen on the least substituted carbon (primary carbon). In this case, steric hindrance is…

In this lab, we did four kind of different test, to mimic the chemistry of digestion. The first one was to test for sugar. We used a dropper and measured 2 ml of maltose and 2 ml of benedict’s solution in a pyrex test tube. After, using a test tube holder, we placed the test tube in a boiling water bath and heated for 5 min. After the 5 min, using a test tube holder we removed the test tube from the water bath. We then repeated the same procedure using starch solution instead of maltose. When we…

The synthesis started with the [3+2] cycloaddition between chiral nitrone 128 and allyl cyanide under microwave activation at 110°C in toluene to provide cycloadduct 2 in 96% yield as a single isomer (Scheme 1).The regioselectivity was identical to that observed for diverse terminal alkenes, with attack on the terminal methylene by the electrophilic carbon of the nitrone, presumably due to both steric and electronic reasons.29a-f The stereoselectivity results from the approach of allyl cyanide…